Subtract 12/56 from 42/84
42/84 - 12/56 is 2/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 56 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 84 × 2 = 168,
42/84 = 42 × 2/84 × 2 = 84/168 - Likewise, for the 2nd fraction, since 56 × 3 = 168,
12/56 = 12 × 3/56 × 3 = 36/168 - Subtract the two like fractions:
84/168 - 36/168 = 84 - 36/168 = 48/168 - After reducing the fraction, the answer is 2/7
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